[chetanahuja]

Note, container images are blobs of static content... programs, libraries etc. When they are running, they're akin to processes (or rather, actually are processes) running on a physical machine or a VM. Typically your build process will create docker container images (via some sort of CI tool perhaps).

Ansible is useful for automating tasks on an actual unix machine (VM or physical). Think of it basically as a parallel ssh to your remote machines.

So typically, you'd use docker containers to create reliable packages for your code and use ansible to do things like provision machines, change configs, run one-time commands on groups of machines etc. And yes, you can also use ansible to deploy your docker containers to your servers too. But that part is more manageable with tools like quay etc. which gives you nice things like package versioning etc.